NQR transient nutation and rotary echoes in the effective field of multiple-pulse sequences.
We present the results of the experimental investigations of the transient processes preceding the establishment of quasistationary states in multiple-pulse nuclear quadrupole resonance. It is shown that the inversion of the phase of radio frequency pulses in the pulse sequence or an extra pulse produces the echo signal in the effective field of the multiple-pulse sequence (the echo on the envelope of echo signals). The train of the echo signals in the effective field is also obtained. The application of this technique for the investigation of the dipole-dipole interactions in spin systems with large inhomogeneous broadening is discussed.
Osokin DYa
Kazan Physical-Technical Institute, Kazan Scientific Centre of RAS, Russian Federation.
Shagalov
V A
VA
D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D009584:Nitrogen / Q000032:analysis; D012977:Sodium Nitrite / Q000737:chemistry
D012977:Sodium Nitrite; D009584:Nitrogen